STCF06 Datasheet, PDF (27/33 Pages) STMicroelectronics – 1.5 A white LED driver with I²C interface

Typical performance characteristics
10 Typical performance characteristics
STCF06
Figure 14. Efficiency vs V_BAT flash mode
Figure 15. Efficiency vs V_BAT, torch mode
90.00
85.00
80.00
75.00
70.00
65.00
60.00
55.00
50.00
I_O = 1 A
I_O = 1.5 A
V_LED = 3.75 V
2.5
3
3.5
4
4.5
5
5.5
V_BAT [V]
90
80
70
60
50
40
30
20
2.5
V_LED = 3 V
3
3.5
4
V_BAT [V]
I_LED = 30 mA
I_LED = 165 mA
I_LED = 370 mA
4.5
5
5.5
Figure 16. Maximum output current vs V_BAT Figure 17. Flash current vs temperature
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
V_LED = 3.75 V
0
2.5
3
3.5
4
4.5
5
5.5
V_BAT [V]
1.54
1.53
1.52
1.51
1.5
1.49
1.48
1.47
V_BAT = 3.6 V
1.46
-55 -35 -15
5
25
45
65
85
TEMP [°C]
Figure 18. Input current vs V_BAT
Figure 19. Input current vs V_BAT
3
2.5
2
1.5
1
0.5
0
2.5
V_LED = 3.75 V
3
3.5
4
V_BAT [V]
I_LED = 1 A
3
I_LED = 1.3 A
2.5
I_LED = 1.5 A
2
1.5
1
0.5
4.5
5
5.5
2.5
V_LED = 3.8 V
V_LED = 4 V
I_LED = 1 A
3
3.5
4
4.5
5
5.5
V_BAT [V]
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